Fix static links in GrammerOne

[dsas]

See #8252

Changes proposed in this Pull Request:

Related issue(s):

[github-actions]

Preview changes

I've detected changes to the following themes in this PR: Grammer One.
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• Preview changes for Grammer One

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Note

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[github-actions]

Theme-Check results

grammerone: No changes required ✅.

⚠️ WARNING (2)

• screenshot.png is 1.1 MB in size. Large file sizes have a negative impact on website performance and loading time. Compress images before using them.
• Your theme appears to be in the wrong directory for the theme name. The directory name must match the slug of the theme. This theme's correct slug and text-domain is grammer-one. (If this is a child theme, you can ignore this error.)

💡 RECOMMENDED (1)

• Tested up to is recommended to have major versions only (e.g. 5.8). Patch version is not needed (e.g. 5.8.1).

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[dsas]

@alaczek This change to Grammer-one makes sense to me. Grammer has nearly the exact same change to its headers, except it still hardcodes a tagline.